The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 1983
Filed:
Apr. 14, 1981
Robert A Karchevski, San Mateo, CA (US);
GTE Automatic Electric Laboratories, Inc., Northlake, IL (US);
Abstract
One or a burst of error signals from an error detector are applied to one input of a latch. The first error received during a 'window' forces the latch to a set position, and a subsequent enabling pulse reads the error occurrence into the count up input of an up-down counter. Following the enable pulse, the latch is reset. If one or more errors occur during the subsequent window period, another error occurrence is read into the count up input. Otherwise, the occurrence of the enable pulse reads the absence of an error into the down count input of said up-down counter. On a full count, an output latch circuit is set by an output signal from the counter. The latch is not reset until a zero count is obtained in the up-down counter. Overflow and underflow are prohibited by circuits external to the up-down counter.